Sigma Analog Panelmeters are produced  according to TS 5590 EN 60051-2 standards for measuring AC current and Voltage in 96x96 mm and 72x72 sizes. Analog Type Ammeters are suitable for 30-50 and 100A direct using and accuracy class is 2.5. With CTs from 30A up to 5000A, they can measure the AC currents as 1,5 class.Analog type Voltmeter are produced in 2 different values in order to measure 250V and 500V AC voltage.